This packing is our patented product which is coated with PTFE dispersion and graphite in SSI 773 Packing to maximize lubrication, heated and press molded in the ring shape of the finished product. Because of maximization of lubrication and excellent resilience and heat resistance of carbon fiber itself, it is possible to extend the service life of the product by minimizing deformation and hardening even in the long term. It is a suitable packing for piston pumps.